instructions a b -- a!=b NEQ -> Pushes $1 if bytes a != b, $0 otherwise NEQw -> Pushes $1 if words a != b, $0 otherwise NEQx -> Pushes $1 if bytes a != x, $0 otherwise NEQxw -> Pushes $1 if words a != xw, $0 otherwise NEQy -> Pushes $1 if bytes a != y, $0 otherwise NEQyw -> Pushes $1 if words a != yw, $0 otherwise NEQxy -> Pushes $1 if bytes x != y, $0 otherwise NEQxyw -> Pushes $1 if words xw != yw, $0 otherwise